Trimmer-saw.



W. H.. LBER.

TBIMMER SAW. APP'LIOMION FILED my z3. 1914.

l El @@WH @Nemesi Feb. 16, w

v 2 SHEETS-SHEET i Mmmm MMM/p VV; H. LIBER.

TBIMMER SglW.

' APPLIOATION FILED MAY 23, 1914. MWMW@ e Patented Feb. 16, 1915.

2 SHEETS-SHEET z.

1eme rrrr WILLTAM H. LIEBER, OFA MILWAUKEEpWISC/ONSIN, ASSIGNOR`TOALLES-GHALMERS MANUFACTURING COMPANY, OF MILWAUKEE, W'ISCONSIN', ACORPORATION 0 y DELAWARE.

- Application filed May as, 1914. serial no. 340,935.

To all whom t may concern.'

Be it known that I,WILLIAM H. LIEBER, a citizen of the United States,residing at Milwaukee, -in the county of Milwaukee and` State ofWisconsin, have invented acertain new and useful Improvement 1n Trimmer-Saws, of which the following is a specifica' tion.

This invention relates to improvements in the construction of saw millmachinery and particularly to improvements in apparatus for permittingcontrol of the positions of ay selective or collective positioning of aplurality of trimmer saws,fwhicl1 is simple in construction andefficient in operation.

Some of themore specific objects 'of the invention are as follows:

To provide a device for permitting either individual, selective orcollective actuation of a plurality of saws irrespective of thepositions of prior setting of the individual saws at the time suchnactuation is desired.

To provide means for -permitting successive .positioning of anpredetermined allotment of the saws, as istinguished from thesimultaneous positioning which has been customary in devices of theprior art.

To provide means for permitting rapid successive collective positioningof all of the saws.

To provide means for permitting rapid successive selective positioningof the saws.

' To provide means for automatically returning the collective andselective actuating mechanism to normal or mid position.

To provide means in the luid pressure actuated saw actuating device, forinsuring a proper supply of operating ,fluid to each of the sawactuating devices during collective To provide a device in which thecollec-1 tive and selective controlling actuating demarianna-saw.

lSpecification of Letters Patent.

-ing device.

Patented lFeb. M, T9915.

vices are operable with a minimum expenditure of manual power. Thisresult is ac complished bythe use of a manually contro1led` motor whichmay be operated either mechanically, pneumatically or electrically asdesired.Y In the present disclosure the motor consists of apneumatically operated piston, but any of the wellknown mechanicaldevices'for accomplishing a similar re sult may be substituted'withoutdeparting from the scope of the present-invention.

To provide a fluid pressure admission means or valve for each of the sawposition.-

and eiiicient in operation. Tn the present disclosure the fluidadmission valves are subjected to an unbalanced pressure which tends atall times to maintain the valves in a position corresponding to saws upposition,

-so that upon'release of the individual controlling levers, the valvesautomatically tend to return the levers to saws up position.

y To provide means for permitting the use of but a single connectorbetween "each of the individualA controlling levers and its coryresponding saw position controlling valve. The connector vinvolved inthe present in-v vention is so constructed as to permit etlicient usethereof in conjunction with guiding pulleys of very small diameter, thisfeaturebeing the result ofthe formation of the portion of the connectoradjacent to the guiding pulley of highly flexible material.

Some of the novel features shown and described herein are claimed incopending application Serial No. 749,539, filed February ing devices,which is simple in construction A clear conception of an embodiment of vthe invention may be had by referring to the drawings accompanying andforming a part of this specication in which like reference charactersdesignate the same or similar parts in thevarious views.

Figure 1 is an end view, partly in section, of a trimmer sa'w positioncontrolling actuating device showing the master lever in mid positionand showing some of the individual levers in each of the extremepositions. Fig. 2 is a fragmentary front view of a trimmer saw positioncontrolling actuat- Fig. 3 is a fragmentary plan view of a trimmer sawposition controlling actuating device, the actuating levers andsupporting shaft therefor being omitted.

Fig. Il is an end view, partly in section, of U0 "a trimmer saw positioncontrolling actuatingdevice showing the master lever and the motorcontrolled thereby, in collective controlling position, and-showing allof the invertical sectionthrough one of the individual saw positionscontrolling valves and a portion of the connection. leading to theindividual actuating device thereof.

In the device disclosed in the drawings the saws are brought intocutting position by their own weight combined with that of sawsupporting arms and the elements bearing against these arms, and areraised out of cutting position by means of uid pressure admitted belowthe pistons of the saw positioning mechanisms. In order to facilitateexplanation, the positions correspond-- ing to intol and out of cuttingposition'swill ybe designated as saws down and saws' up position,respectively. It should be understood, however, that these termsarecorrect only when applied to an overhead trimmer, and it is not intendedto limit the application of this invention to that type of ltrimmer bythe use of these terms. The term collective 'as used in the present ispecification designates allof the saws contro'llablev by the mechanism.The term selectivedesignates a predetermined allotment or portion ofthetotal number of saws commonly knownas the Slasher saws. The saws otherthan the selective saws are des-` ignated as intermediate saws. Thecollective saws therefore include both the .selective or' Slasher sawsand the intermediate or non-Slasher saws.

The ordinary trimmer saw equipment includes a lumber conveying table 73,upon which the material to be trimmed is automatically fed toward the.saws 67 by means of a suitable conveying mechanism, see Fig. 8. Theindividual saws 67 are supported by arms 66 which swing about stationarypivots 69 on the mill framing. A common driving shaft 7 0 carries aseries of driving pulleys -71 which aredrivingly connected to the sawvpulleys 72 bymeans of suitable belts 68.

The location of the pivots 69 of the arms 66 is such that with the saws67 insaws down position, the belts 68 are taut, and with the` saws 67 insaws up position, the belts 68 are exed,

Fach of the individual saw positioning means consists of a. cylinder 62having an formed of piping having threaded ends for connection with theend head 81 and liange 82, see'Figs. 8 and 9.

A piston 84 is reciprocable within each of the cylinders G2 and iscapable of imparting -motion to its respective saw 67 through apiston-rod 64, connection'96, adjustable conl neetion Gand arm 66. Thepoint of exit of the piston rod 61 from within the cylinder 62 ispackedby means of a suitable stalling box 87. The combined weight of thepiston 84, rod 64, connections 96, G5, saw carrying arm 66, and saw 67,is capable of moving the saw 67 rapidly into saws down or cuttingposition upon release-of fluid pressure from within the lower pistonchamber. The upper portion of the cylinder 62 is provided with a reliefport 83 located a sho'rt distance below'the end of the cylinder, whichpermits escape of the major portion of the air from within the cylinder62 as the piston 811 travels upwardly therein but which permitsretention of sufficient air within the cylinder to form an air cushionfor the piston at the end of its up stroke.

. The bracket 63 has a valve casing 77 formed in the lower end thereof.lThe valve casing-7 7 is bored toreceive the piston valve 95, the lowerend of which is of ,enlarged diameter as compared to the upper portionsthereof. The valve 95, see Fig. 10, is formed with two cylindrical.portions 100, 101 of equal diameter, which are connected by means of avalve stem 102. The lower valve portion 100 controls communicationbetween the fluid pressure inlet pipe 93 and the common inletand exhaustport 92. The upper valve portion 101 controls communication between the'port 92 and the exhaust port 94. The common inlet and exhaust port 92passes .upwardly through the bracket G3 and vopens directly into thelower piston chamber of the cylinder 62. The upper end of the port' 92is provided with a vball check valve 89 which permits the passage offluid, through the port 92 into the cylinder G2 but fluid within thelower piston chamber and permitting the piston 84 vto compress thisAretained fluid during its travel beyond the end of the port 90.

.The common fluid pressure supply pipe or header 7 6 is connected withthevalve cas weaves ings 77 through the branch pipes93. Each branch pipe93 connects with the bore of its corresponding valve casing at a pointsomewhat above the enlarged lower end of the valve 95, thus maintainingthe'annular upper surface of the valve 95, which is formed above anddirectly adjacent to the enlargementof the lower end of the valve, underunbalanced pressure. rll`he unbalanced pressure upon the valve 95 tendsto force the valve in a downward direction and to maintain fluidpressure beneath the saw positioning piston 844 at all times.

The 'valves 95 have their upper ends con-- nected to suitable rictuatingconnections or Wires75 by means of short lengths of highly flexiblematerial such as cables or `chains 86. 'llhese chains 86 coact withsmall guide pulleys '85 Acarried by brackets 98 'The brackets 98 areswingable about the axes of" *i direction with equal efCenCy lThe 'upperends of the' valves 95 are adapted to coaot with projections formed onthe safety 'de vices or stops 88 and to carry these projections incontact with the bracket stops 91:

lhe safety stops 88 become effective whenever the liuid pressure in, thelower ,piston chambers of the cylinders 62fails, to pre nectors vent thesaws 67 frornrnoving downwardly at such times. This safety device,however,

does not form any part ofthe present invention and furtherdescriptionthereof is therefore deemed unnecessary.

The o erating ends of the wires or con- 5 are connected to the bellcranks l 74 through suitable adjusting devices 78, by

means of which the proper tension upon the connectors 75 may beretained. IThe bell` cranks 7 4 are pivotedin swivel. brackets 79 whichare pivoted in stationary brackets 80 by means of pivot pins 97. 4'llheremaining arms of the bell cranks 74 areconnected to the lower ends ofthe operating .wires or' connectors 50, the upper ends of which areconnected to the individual operating levers Aas will be laterexplained. The-axes of the connectors 50 and the pins.97 coincide sothat the swivel brackets 79 may be swung into any desired angularposition for proper actuation of their corresponding Valves 95.

-lhe saw controlling valve actuating device comprises a plurality ofindividual levers 15, 16, and a master lever 17, all of which aremounted to swing about a common supporting shaft 21, see Figs. 1 to 4.'lhe levers 15, 16, are alike in construction and have front and rearprojections 42', 43, extendingl radially from their supporting hubs. Therear projections 48 are provided with openings for connecting theoperatingv connectors '50 to the levers. 'llheupper extremities of thelevers 15, 16, are formed to permit ready manipulation of the levers by'means of the fingertips, and are provided with s aw designatingnumerals. 'llhe levers 15 which are provided with the odd numbered sawdesignating numerals at the upper ends thereof, are adapted to actuatethe selectit'fe or ,Slasher saws. The levers 16 which are providedwith'the-even numbered saw designating numerals, are adapted to ,actuatethe intermediate or non-Slasher saws. The arrangement of levers asherein shown Vand described applies to a fourteen saw trier in whichtheslasher and intermediate saws are ralternately, arranged,

bute Shana te understood that this dis bearing'. 1`hebearings 19, 20,are supportedA upon ,a suitable lever bracket 18 which is supported uponthe supporting beam 23 Inounte'd adjacent tothe operators stand. Thecollar 38 vservesfto prevent. the master lever '17 lfrom leaving theoverhanging end of theshaft 21.

The master lever 17 differs. from the individual levers 155 16, in thatit has no projections 42, 43, but has a downwardly extending valveoperating projection 24. The lower extremity of the projection 24 coactswith a recess in the upper portion of the slide valve 25. The slidevalve 25 is adapted to control the admission vand exhaust of fluid underpressure to the piston chambers of the motor cylinder 22, see-Figs. 1and 4. In practice it would be preferable to subject the upper portionof the lvalve-25 to duid pressure, but the disclosure has been omittedto simplify explanation and disclosure of the invention. 'lhe ports 35normally connect the extreme ends of the lcylica f lever 17 is normallymaintained in its vertical or mid position by means of a coiled Yspring41 thecnds of which cross each other and coact with opposite sides ofthe stationary projection 40 on the front bearing 19 and with the masterlever returning pin 39 which projects laterally from the master lever.rllhe spring 4l besides tending to return ythe master leverA 17 tomidwposition, also returns the valve 25 leo to mid position upon releaseof the master lever, and automatically establishes communicationbetween. the chambers on the' opposite sides of themotor piston 34 andthe atmosphere. l

The motor piston 34 is provided with a rod 33 which projects throughboth end heads ofthe cylinder 22. The ends oft-he rod 33 coact with thelower master and slasher bell crank arms 27, 28, respectively, which aresecured to the vertical shafts '31, 32, respectively. The'shaft 31 ismounted in bearings in the bracket 29, while the shaft 32 is mounted inbearings in the bracket 30, these brackets being supported directly from4the sides of thebeam 23. The upper bell-4 crankarms 4,8', 49,` aresecured to the upper ends of the shafts 31, 32, respectively, and aredisposed substantially at right angles tothe lower bell crank arms 27,28, respectively. Each of the shafts 31., 32,

is provided with a returning arm 36 which positionthrough the rod 33, sothat the springs SZfautomatically return the piston' 34 to mid position'upon return of the valve 25 to mid position.A v

- The lever bracket 18 is provided with tw parallel longitudinallyextending slots'in the'front portion thereof, and one longitl'ldinallyextending slot in the rear portion 10.

thereof. These slots are located underneath f the projections 42, 43, ofthe levers 15, 16. The master rod 44, 'see Figs. 1 to 5, is norniallyslidably mounted within one of the slots in the ont portion of thebracket '18 and hasgits end connected to the swinging extremity of, thebell crank arm 48. The intermediate lever actuating rod 45, see Fig.6,.,is normally slidably mounted in the remaining 'slot in the frontportion of the bracket 18, and has its one end connected tooneezrtremity of a cross connecting'lever 47 which is pivotally mountedupon the bracket 18 by means of a pivot 52.` The Slasher lever actuatingred 46, see Fig. 7, is normally slidably-mounted in the slot in ther-earpor tion ofthe bracketvv 18, and has one of its ends..connected to the.swinging end of the Abell crank arm 49, and vhas its opposite endconnected to thefremaining; extremity ofthe cross connecting lever 47.

The master rod 44, see Fig. 5, is provided with Ja -series' ofserrations orv notches, the side wallsf56A of which are normallyadjacent to the' corresponding projections 42 of the' individualleversgl, 16. .The inclined lever releasing surfaces 53 of the masterrod 44 are so located that no two of the notches in the master rod 44are of the same width. The intermediate lever actuating rod 45 isprovided with a series of serrations or notches, the side walls 57 ofwhich are normally adjacent to the corresponding projections 42' of theintermediate levers 16.

.The inclined intermediate lever releasing surfaces 5.4. of the rod 45are so located that no two of thejnotches in the intermediate leveractuating rod 45 are of the same width. The slasher lever actuating rod46 is vprovided with a series of serrations or notches, the side walls58 of which are normally adjacent to the corresponding projections 43 ofthe Slasher levers 15. The inclined Slasher lever actuating surfaces 55of the slasher lever actuatingrod are so lo- 'cated that no two of thenotches in the rod 46 are of equal width.

The levers 15, 16, are normallyr held in a position corresponding tosaws up position by means of the unbalanced pressure upon the valves 95.If, however, these levers are placed in positions corresponding to sawsdown position, the levers are retained in such position by means of leafsprings 51 which are secured to the bracket 18 and which have wedgeshaped ends coacting in central grooves in the lower portions of thehubs of the levers 15, 16.

' During the normal operation of the device, and at such times when thecollective Vand selective'positioning of the saws 67 is 'not desired,the master lever andthe mech` anism controlled thereby is in theposition shown in Figs. 1 and 3, the actuation of the individual levers15, 16, being unrestrained. With the mechanism thus positioned, any oneor more of the individual saws 67 may be brought into cutting or sawsdown position by manually pulling the corresponding lever 15,716, towardthe operator. A pull on one of the levers 15, 16, acts through thecorresponding connector 50, bell crank 74, connector and chain 86 toraise the valve 95, thus establishing communication between the chamberof the corresponding saw actuating piston 84 and the atmosphere throughthe ports 90, 92 and 94. This rcleasc of iiuid pressure from beneath thepiston 84 permits the saw 67 controlled thereby to move into cuttingposition due to the action of gravity upon the saw and the connectedelments. During the upward movement of the valve 95, the safety deviceend of the cylinder 62. T he continued downward movement of the piston840cm presses the confined fluid and forms an automatic cushion for thesaw 67 at the end lll ' 1 past the ballvalve 89.

of Vits downward stroke. When the lever 1 5, 16, has been pulled`forward to itsv eX- treme position, the wedge of the corresponding leafspring 51 adjacent to the hub of the lever'snaps intov the recess in thelower portion of the hub and holds or locks the, lever in 'saws downposition. Upon release of the lock? adorded by the spring 51, the fluidpressure from the supply header 76l acting up'hn the unbalanced area ofthe valve .95,

automatically forces the valve 95 downwardly'and causes thecorresponding individual'lever to assume itsextreme position toward theright as viewed in Fig.v 1, which position corresponds 'of saws upposition. As'the valve 95 assumes its lower position as disclosed inFigs. 9 and 10, the communication to thefatinosphere through the port 94is cut 0E and fluid under pressure is ad-"v mitted from the commonsupply header 76 through the pipe 93 and ports 90, 92, to the'thiscopined Aair and forms an automatic cushion for the -piston 84 atthe endof its upv-stroke.` `Duringj the upward movement off-the pistonrod 64, the safetyv stop `88 will noticlutch'the rod 64, such clutchingoccur-` ring' only during the downward t movement ofthe rod 64 andwiththe valve 95 in its lowerm'ost position. y

`lt will he notedA that the saws 67` are placed into cutting position bya positive pull on their corresponding individual le` vers 15, 16, butmay be placed out of cutting position automatically 'by merely releasingthe lock aorded by the .springs 51 upon the corresponding individuallevers. l,llt should 'alsobe noted that Iif for anyreason the pressurein the supply header 76 fails with the valves 95 in-their lo'wermostposition, the safety device or stop 88 willautomatic'ally preventdropping of the corresponding sawsbelow the positions heldby these sawsat the time of the Huid pressure failure. y l

lf it is desi'red'to operate the saws collectivelyjto raise the saine,this may be done by pulling or swinging the master lever 17 toward1 theoperator. Such motion of the master lever 17 causes the valve 25 toestablishr communication between-the pressure inlet'p'ort 26 and theport'35' at the right, of

Y the. cylinder 22 as viewed in Fig. 1. This establishment ofcoinn'iunication permits fluid under pressure to enter 'the right handpiston chamber and to force the piston 34 toward the left to the eXtremeposition` i toswing these levers a suiiicient amount to release the locka'orded lloy the correspondingspringsv This release of the individuallevers immediately permits4 the unbalanced pressure on the correspondingvalves 95 to become effective and to successively place all of thevalves 95 of the corresponding individual levers into sawsV up positionwithaalrfesulting movement ofl the saws out of'cutting position.l lfpreviously to the master actuation, any ofthe saws. have been in saws upposition, such saws and their corresponding actuating mechanism will notbe' a'ected by the movement of the" master rod 44. llt should be notedthat lby fori'ning` the detents in the upper portion of the ymaster rod44 of di'erent Widths, the saws are successively actuated, thuspermitting la gradual dow of the Huid under pressure from the commonheader 76 to the actuating cylinders.` This feature is of importancesince it permits the proper supply of actuating lfluid to each ofA thesaw actuating :cylinders l62 at ,the proper time, whereas if `theactuation ofthe saws is simultaneous, the header 76 must either be madevery large' in diameter or thesaws near the end of the header remotefrom the supply inlet will not receive a proper supply of actuatingfluid. While the actuation of the saws inthepresent device issuccessive, 'the total time consumed in raising all of the saws "in theusual trimmer saw equipnient of .from ten to twentysaws, would not heobjectionable and the advantage of hav-` ;:a proper supply ofactuatingfluid for -eacliwof thesaws would be a 'decided one. Uponreleaseof the master actuating lever ict 17 by.' the operator, thespring 41 imme- -f diately' becomes e'ective in returning the masterlever 17 to its normal or mid position. This return of the master lever`1.7 causes the valve 2 5 to. assume its` mid position and to establishcommunication between' the chamber at the right f the motor piston l24and the atmosphere through the port 35.4 llpon'release. of thispressurethe pistion 34 through the rod 33, is returned to mid positionloy the spring 87 which-presses against the returning arm 36` and theweb of the bracket 29, causing the'bell crank 27, 48, to assume itsnormal position as shown in Fig. 3. With the return of the bell crankarm 48 to normal position, the. normal po sition of the, master rod 44-is restored.

If it is desired to operate the. saws 67 se 5, lectively to lower the:Slasher saws and to raise` ltheI intermediate saws, this may be done bypushing' or swinging the. master lever 17 away from the operators stand.Such motion of the master lever 1'( causes 19 the valve 25v to establishComunication be! cross connecting lever 47' to the intermediate 26lever'releasing rod .45, causing the rod 45 to move. toward thelett'lsimultaneously with. the movement. of the rod-46 toward the right. Thevmovement of the intermediate lever releasingy rod toward the leftrcauses` the inclined surfaces 54 thereo` to.v successively coact withthe adjacent projections 42 on the intermediate levers 16 and to swingthese levers a sutlicient amount to release the` lock afforded by thecorresponding springs' 51.. This release of the intermediate levers 16immediately permits the unbalanced pres- .sure 'on'. the.y valves 95corresponding to these levers to become edectivey andto successivelyplace the valves into. saws up position. The movement of theintermediate saw valves 95 into saws up position causes the intermedinate levers 16 to take corresponding positions, as above explained, andplaces the intermediate saws out of cutting position. vDuring the`movement ot the Slasher lever actuating Arod 46 toward the right, theinclined surfaces 55 successively coact with. the adjacent projections43 of the Slasherv levers 15v and gradually move these levers intopositions corresponding to. saws down, position. As the slasher leversare swung into saws down position, the corresponding springs` 51automatically become effective, to lock these levers into suchposition.:l It should be noted thatI during movement of' the' masterlever 17 for actuationof the saws selectively, the intermediate sawswhich are at theV time in saws up position as well as the Slasher sawswhich are. in saws down position, will not be atlected. Upon release ofthe master actuating lever 17 by the operator, the' spring 41 againbecomes' effective in return` ing the master lever to normal or midposition, as above explained. The valve 25, piston 34 'and .rods 45, 46, thereupon auto,-

rlhis establishment of use ofa very small guiding pulley adjacentinaeyes matically move to normal or mid position, thus placing themechanism in condition for either and immediate collective, selective orindividual actuation of the saws.

The use of the motor to collectively and selectively actuate theindividual levers re duces the 'amount of manual power necessaryVtooperate the levers, to a minimum. The rapid successive actuation ofthe saws as above explained, either collectively or selectively,yinsures the `provisioi'i of a proper supply of actuating iluid to thevarious actuating cylinders. 'lhe'use of an unbalanced fluid pressureactuated valve for automatically returning the individual levers to sawsup position provides a simple means of raising the saws after theindividual levers are released from the lock afforded by the springs 51,and also permits the use ol but a single connection between cachindividual lever and its valve.

By forming the portion of the connector 'Z5' which passes over theguiding,` pulley 85 of a highly flexible connecting material, the

to the. valve is permitted. lt has been'lound that` by guiding a pianowire suoli as 'it 1S desirable \to use in this. type of equipment,

over a pulley of very' small diameter, the

small radius of the bend in the wire and the constantshifting of thebent portion over the pulley, causes the wires to break. With the useofV chain or similar" connector at the point of coaction of theoperating connection with the pulley 85,y this undesirable breaking ofthe connector. is eliminated. The provision of a pivot 99 for thebracket 98 having its axis substantially in line with the valve 95, inconjunction with the use of a bell crank 74, pivoted upon the bracket 79105 having its pivot 97 substantially in line with the `connection 50,permits location of the sa'w -actuating cylinders at any desired anglerelative to the central point of control. lt should also be noted thatthe various ellements of the equipment hcreindisclosed are madeinterchangeable so tar as possible in order to reduce cost of'manufacture as'well as to facilitate furnishing of repair parts.

It shouldbe understood .that it is not desired to be limited tothe exactdetails-ot construction shown and described, for obvious modificationswill occur to a person "skilled in the art.

It is claimed and desired to secure by Letters Patentfr .l 1. Incombination with a table, a plurality of saws movable into and out ofcutting position relative to. said table, and means for effectingsuccessive setting of said saws.

2. ln'combination` with a tablc,`a plurality of saws movable into andout of cutting position relative to said table, and means for effectingsuccessive setting' of said saws into either of said two positions. 13@

saws into either oit said two positions,

means i'or edecting successive setting of said SWS.

y-l-. ln combination with a table, a plurality oit-saws movable into andout of cutting position relative to said table, individual means fornormally setting each of said saws into either of said two positions,and means for effecting successive setting of said saws into either ofsaid two positions.

5. ln combination with a table, a plurality of saws movable into and outoi. cutting position relative to said table, individual means fornormallysetting each of said saws into either ci said two positions, andmeans for eHecting either successive collective or successive'select-ive setting oit said saws.

6. lln combination with a table", a pluralitiT of saws movable into andout of cutting position'relative to said table, individual means fornormally setting each olf said saws into either of said two positions,and means for ell'ecting either successive collective setting of all ofsaid. saws out of cutting position, or successive selective setting ofsaid saws into either of said two positions.

7. ln combination with a table, a plural- -ity oi saws movable/into, andout of cutting position relativeA to said table, and a master lever for'effecting rapid successive setting of said saws.

S. ln combination with a table, a plurality of saws movable into and outof cutting position relative to said table, individual levers fornormally setting each of saidsaws into either of said two positions, anda master lever for etlecting successive setting of said saws.

ln combination with a table, a plurality ci saws movable into and out ofcutting position relative to-said table, fluid pressure actuated meansfor moving said saws into one of said two positions, controlling meansit'or said fluid pressure actuated means, and a second iiuid pressureactuated means tending to maintain said first mentioned)Fluid pressureactuated means in a position corresponding to out of cutting position ofsaid saws.

l0. ln combination with a table, a saw movable into and out of cuttingposition relative to said table, fluid pressure actuated means formoving said saw into one ot said two positions, a valve :tor controllingsaid tluid pressure actuated means, means `for actuating said valve, andmeans tor establishing unbalanced tluid pressures on said valve tendingto maintain said valve'open to pressure.

ll. lin combination with a table, saw movable into and out ot cuttingposition relative to said table, fluid pressure actuated means formoving said saw into one ot said two positions, controlling means torsaidliluid pressure actuated means, actuating means for said controllingmeans, a single flexible connection4 liior communicating motion fromsaid actuating means to said controlling means, and fluid pressurevactuated means for moving said controlling means to a position to whichcorresponds 'out ot cutting position of said saw when the end ot saidtlexible connection adjacent to said actuating means is moved towardsaid controlling means.

12. ln combination with a table, a saw movable into and out ot cuttingposition relative tosaidtable, tluid pressure actuated means tor movingsaid saw into one et said two positions, controlling' means for saidHuid pressure actuated means, actuating means yfor said controllingmeans, and a single flexible connection for communicating lmotion fromsaid actuating to said controlling means, said controlling means beingmovable by duid pressure tor maintaining said Flexible connection taut.

13. ln combination with a table, a saw movable into and out o'f cuttingposition,

relative to said table, iluid pressure actuated means for moving saidsaw into one ot said two positions, controlling means 'tor said fluidpressure actuated means, actuating means for said controlling means,connection for communicating motion from said actuating to saidcontrolling means, and. tluiol pressure actuated means Jfor maintainingsaid connection taut at all times. I

lll. ln combination with a table, a saw movable into and out et cuttingposition relative to said table, fluid pressure actuated means or movingsaid saw into one oit vsaid two positions, controlling means for saidHuid pressure actuated means, duid pressure actuated means tending tomaintain said controlling means in a position-to which corresponds outof' cutting position of said saw, actuating means 'for said controllingmeans, 'and a single tlexible connection for communicating motion tromsaid actuating to said controlling means.

ln testimony whereof, the signature of the inventor is ailixed hereto inthe presence of two witnesses.

WllLLlAll/l lLlEBElt.

Ron. E. Storm.

llll

